Ski boot having an opening quarter formed of more interconnected parts

Abstract

The ski boot comprises a quarter formed of two complementary parts which partly overlap each other when closed along two vertically extending lateral centerlines. The rear part of the quarter is pivoted to the boot shell, and the quarter front part may be pivoted to the rear part, being guided by a cam arranged to slide over a stud which is rigidly attached to the shell and may be rotatably adjusted, the rotation of the rear part of the quarter, additionally to closing onto the front part, also moving a cuff-line member which closes the skier's foot instep.

We claim: 
     
       1. A ski boot structure comprising a shell with a sole part and an upper part with an instep zone, an openable quarter on said shell, said quarter has a rear part and a front part mutually complementary and arranged to slightly overlap each other when closed, said rear part is hingedly connected to said shell, said front part is hingedly connected to said rear part at an eccentric location relatively to the hinge point of said rear part of said shell, a cuff-like member enclosing the front of said shell, an adjustable link member attached at said rear part and at said cuff-like member to move said cuff-like member contemporaneously with said rear part, at least a stud attached to said shell, a shank ortogonally protruding from said stud, said shank being positionable turning said stud, at least a slot cam arranged to slide along said shank for guiding said front part actuated by the movement of said rear part. 
     
     
       2. A ski boot as claimed in claim 1, wherein said quarter rear part is pivoted to a sub malleolar region of said shell and allowed to rotate about a parallel axis to the plane of the boot sole extending perpendicularly to the longitudinal centerline of the shell, an adjustable fastening device for said adjustable link member is provided at the heel region of said quarter, said link passes through a groove formed in the boot heel to impart, as the quarter rear part is rotated, a longitudinal translation movement of said cuff-like member locking the foot instep with an adjustable pressure determined by the adjustment of said link member on said fastening device. 
     
     
       3. A ski boot as claimed in claim 1, wherein the front part of said quarter being pivoted to the rear part at a different point from where the rear part is connected to the boot shell provides a lever arm during the rotation of said quarter rear part. 
     
     
       4. A ski boot as claimed in claim 1, wherein said front part has two slot cams at corresponding positions on either sides of the boot, said cams being guided by the shanks of two studs also provided at corresponding locations on either sides of the boot and made rigid with said shell although rotatable to adjust the position thereof and wherein said front part being articulated to said rear part causes said slot cams to act in such a way that as said rear part is rotated, said front part is upwardly displaced. 
     
     
       5. A ski boot as claimed in claim 4, wherein said shank of each of said studs is offset from the centerline of said stud therethrough it is coupled to said shell, to adjustably rotate said stud. 
     
     
       6. A ski boot as claimed in claim 4, wherein as said stud shank is rotated and positioned, said cam is displaced in such a way as to set said quarter in a different and adjustable closed position with respect to the plane of said sole. 
     
     
       7. A ski boot having an opening quarter, as claimed in claim 11, wherein said quarter is formed of two complementary parts, said two parts being both pivoted to the shell at the same coincident point both for the rear part and front part. 
     
     
       8. A ski boot as claimed in claim 1, wherein said quarter is formed of two parts, a front part and a rear part, said two parts being pivoted individually to the shell at different points.